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DIN 985 Nylon Insert Hex Lock Nuts

DIN 985 Nylon Insert Hex Lock Nut

DIN 985 Nylon Insert Hex Lock Nuts are internally machine screw threaded hex nuts that rely upon an undersized captive nylon (polyamide) washer to create the prevailing torque feature that resists rotation and, hence, loosening. Identified as "regular" pattern or "thin type," they are considered one-way lock nuts because they are always installed so the nylon insert threads on last. While the non-metallic insert functions as a gas and moisture seal, it is limited with regard to temperature (-58 to +250°F) and chemicals it can withstand. And even though the insert is resilient and largely recovers to its original size when the nut is removed, nylon insert lock nuts can only be reused a limited number of times. It is unlikely that thread galling will occur with steel nuts but the additional mating thread friction introduced by the nylon insert may cause galling with stainless steel nuts. Class 6, 8 and 10 steel nuts are available as are A2, A4 and A4-80 stainless steel. Coarse threads are standard but many sizes are offered with fine and extra fine threads. The finish for steel is zinc plated. Thread tolerance is 6H; right-hand threads are standard. Always ensure that the nut Class is equal to or greater than the screw Class. DIN 985 Nylon Insert Hex Lock Nuts are similar to ISO 7040 and ANSI B18.16.3M. If a heavy pattern (high type) nylon insert hex lock nut is required, consider DIN 982.

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Code Product Qty. Package Qty. Carton  
NPB563-500 M2-0.4 Nylon Insert Hex Lock Nut DIN 985, Class 6, Zinc Plated
NPB576-500 M2.5-0.45 Nylon Insert Hex Lock Nut DIN 985, Class 6, Zinc Plated
NPF576-500 M2.5-0.45 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NQA576-500 M2.5-0.45 Nylon Insert Hex Lock Nut DIN 985, A2 Stainless Steel
NPB586-500 M3-0.5 Nylon Insert Hex Lock Nut DIN 985, Class 6, Zinc Plated
NPD586-500 M3-0.5 Nylon Insert Hex Lock Nut DIN 985, Class 6, Zinc Yellow Plated
NPF586-500 M3-0.5 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPG586-500 M3-0.5 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Yellow Plated
NQA586-500 M3-0.5 Nylon Insert Hex Lock Nut DIN 985, A2 Stainless Steel
NQB586-500 M3-0.5 Nylon Insert Hex Lock Nut DIN 985, A4 Stainless Steel
NPB595-500 M3.5-0.6 Nylon Insert Hex Lock Nut DIN 985, Class 6, Zinc Plated
NPB602-500 M4-0.7 Nylon Insert Hex Lock Nut DIN 985, Class 6, Zinc Plated
NPD602-500 M4-0.7 Nylon Insert Hex Lock Nut DIN 985, Class 6, Zinc Yellow Plated
NPF602-500 M4-0.7 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPG602-500 M4-0.7 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Yellow Plated
NPN602-500 M4-0.7 Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated
NQA602-500 M4-0.7 Nylon Insert Hex Lock Nut DIN 985, A2 Stainless Steel
NQB602-500 M4-0.7 Nylon Insert Hex Lock Nut DIN 985, A4 Stainless Steel
NPB618-500 M5-0.8 Nylon Insert Hex Lock Nut DIN 985, Class 6, Zinc Plated
NPF618-500 M5-0.8 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPG618-500 M5-0.8 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Yellow Plated
NPN618-500 M5-0.8 Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated
NQA618-500 M5-0.8 Nylon Insert Hex Lock Nut DIN 985, A2 Stainless Steel
NQB618-500 M5-0.8 Nylon Insert Hex Lock Nut DIN 985, A4 Stainless Steel
NQC618-500 M5-0.8 Nylon Insert Hex Lock Nut DIN 985, A4-80 Stainless Steel

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